Telephone-switch mechanism for preventing cord-twist.



. H.HANSEN. TELEPHONE SWITCH MECHANISM FOR PREVENING-CORD TWIST.

- APPLICATION Flu-:p MAR. 12.1911.

2 SHEETS-SHEET I.

` if@ L pAFFlWl FFIFF.

HANS HANSEN, or KANsAscITY, ivrrssoUrtI.

terasse..

Sp'ecncatonof Letters Patent. Pmbnilggl Dogg, 1111, 1191*?,

Applicationmealvrareh 12,1917. serial No. 15/1,12aY

T0 all whom t may concern.'

Be it known that I, HANS HANSEN, a subject of the Kingdom `of Denmark, residing 4atKansas City, in the county of Jackson, yState of Missouri, have invented certain new and useful Improvements in 4fllelephone- Switch Mechanism for Preventing" Cord- 'I`wist, `of which the :following ,is a -tdescr'iption, referring to` thedrawings which yform a part of this specification.

The inventionv relates particularly .to switch mechanism `located in the base of a desk telephone instrument and an improve ment inthe method lof conducting thecord wiring thereto whereby undesired twisting of suchcord wiring is `obvia'ted, thereby in creasing the life and usefulness of the cord.

In the desk telephone as now employed, the cord wire leading from bell boxenters the base of thetelephone instrument through .thesarne opening as the `cord wire connecting to thereceiver. These two sets of cords are very ysusceptible to becoming twisted and kinked making .the use of the instrument unsatisfactory until the user lhas untwisted said cords. My improved switch mechanism` and allied yparts give notonly a much stronger switch connection andone less ylikely to get `out of order but also ,overcome entirely the `objectionable cord twisting.

In ,the drawings, Figure 1. is a `face vlew l V.of the switch mechanism in lthe basepf a desk telephone instrument, the baseplate "being removed to disclose same.

l Fig. 2. shows a `view lof `the `bell box and .cord from same entering the baseof a telephone instrument and the cord from said baseto thereceiver. i

Fig. 3. showsa portion of the base cover `of the telephone removed along the line Xi-X in Fig. 1. to disclose the view ofthe switch mechanism looking in the direction of thearrow.

Fig. 4 shows a portion of the base cover ofv the telephone removed along the line Y-Y in Fig. 1. to disclose the lView of the switch mechanism lookingin the ldirection of thelarrow.

Fig. 5 is a crossffsectional view of the ,two ringedterminal seen in Fig. 1.

Fig. 6 is a side view of the end portion of i 4the three ringedterminalseen in Fig. 1.

` F ig.` 7 is a perspective` viewof any one of .the ivesprings seen in Fig. 1; and Ahaving a platinum point formed thereonfor contact PIPQSGS- Similar numeralsof reference indicate corresponding parts in'all the figures `of the drawings. i A

Referring tothe drawings, at 10 is seen the cord wiring 'leading frombell box 11 through hole 12in`base` cover 13 of the desk telephone instrument 14. "Through `afhole in 1 3 the cord,` wiring 16` connects to the receiver 17. Y u

i vThe terminal Seen in Fig. fiscornposed of the brass outer sghell 18 adaptedto re ceive the cordl through its endopening 19.

`The tivo wires contained in cord`16 `are attached respectively to the screw terminals 20 and 21 respectively connected to the brass inserted portions 22 and 23 housed within the outer shell 18 in the manner seen in section, the parts 1 8, 23 and 22 beingrinsulated as shown by the solid black portions .of the figure; The` screw` 20 passes through a cop- `per plate 20X held by two small sc'rewsf20K, 20L to the portion 22. This plate 20,X `being insulated as shown in Fig.' 5 from" 25 and enables a good connection to be made in attaching'the wireto 20. The borecf` shell '18 inward from 19 is preferably `threaded 'in Y manufactureA to `more firmly grip `andyhold the cord 16 in desired coacting arrangement.

Th-eterminal seen in `Fig. 6 is similar to that seen in lFig. `5 the cord 10 `comprising three wires has oneof said wires connecting with `a screw terminal located within the shell 1,85, on 22X, a second wire is attached to a screw .termiu nal on 2 3x while the thirdwire isi located within and in contactwith the shell 18X.` will `loe understood thatthe parts 22X, 23X` and 18x are likewise properly insulated in similar manner as described and shown concerning Fig. 5,. Platinum rings 2,41 and 25 `indicate contact ring rportions sleeved around the respective enlarged end portions of 22 and 23, Fig. 5. ELikewise platinum rings 24* and 25X are arranged on 22 and 23", likewise a third platinum lring 26 is arranged `around the end portion of 18X, ,inFig 6.f

27 indicates a plate attached `to the Vupper under surface of the lbase cover 13. At `L28 is seen a rear housing platehaving` feet`f29, 29 held by insulated screws to the plate 27 An insulation 29X is introduced between feet 29 and plate 27. At 30 is a front housing `aangel- 35 Suspended from 27. A ma se,

`plate having feet 31, 31 properly insulated and held byV insulated screws to plate 27 i connected with the hook lever 37 is connected at 38 with lever 32. A coiled spring 39 vbears against 27 and 32 as seen 1n Fig. 4.

Slots 40-'and 41 respectively .in the housing plates 28 and 30 permit the lever 32 to` belp'ajssed therebetween. v

.Round holes are drilled through 28 at 42 and 43 of equall diameter to the rear end portions of 44 of 18 and 44X of 18X within which' holes saidv parts are rotatably 'housed asl seen 'in Fig. Y1. Likewise roundv holes in diameterlequivalent tol the portions 45and 45 oflS and 18.c are4` drilled in the plate 30 at 46 and 47 and Vwithin which holessaid `parts are' rotatablyhoused as seen inFig. 1. j lArms 48 and 49* project from the upper outer portions of 30." IThese yarms are`insu latedjas shown ini-black. y j f'50'and 51similar ,tov that shown' in Fig. 7,

Flat brass'springs project fromarm 48' and have their platinum points 52 'respectively over and adapted to contact with Aplatinum rings 24 and 25 yon the terminal seen in Fig. 5 as housedv in Fig. 1. VAlso, brass flat springs. 53, 54, 55 project from 'armf49 and have their platinum points 52 'respectively over and vadapted to contact Awith platinum rings 243 25", k26Y on the terminal seen in Fig'. 6 as housed in Fig. 1. Each of these springs are provided with insulated screw Vmeans for attaching them tol their respective arms.

l A wire 56 connectsl the.` terminals of lsprings and 53, and a wire 57 connect-s lthe terminals of springs 51 and 54, these wires pass under a plate-58` secured at 59 4to 30. AY wire -60 connected at terminal of vspring. 51 .and la wire 61v connected to terminal of'spring 55 lead to the transmitter 62. j This arrangement of wiring performs `the ,same function as in common use in switch mechanism in' other desk telephone j switch mechanisms.

In my construction, when the receiver 17 is hung'up von hook 37 the rocking lever 32 45.

compresses spring .39 and the insulated end 33 ofr32 bears'against the outer ends of vsprings 50, 51, 53, 55` removing their y'respective contact points 52 from the contact said points havebeen making with the platinum rings adjacent thereto, thus cut yting outthe instrument to enable a ring to come in.` This contact of springs 50 and 53 i "thus lbroken is. illustrated by. dotted line Yposition in Fig. 3, the new position of said springs being illustrated by solid line posi- The cord `10 and its terminal bearings 44x Vand V45X` are free to rotate' in 12, 43

Vand47 lrespectively' and cord 16 and its terv.minal-bearings44'and 45 arefree to rotate 60 in V15,42 and 46 respectively thus entirely eliminating cord twist sincethe` tension ordinarily givento such cords in twistingV will ynow lforce the rotation of the parts instead.

When the receiver 17 is oiithe hook 37, the spring 39' will operate whereby the portion 33 will be removed from bearing against the fiat Vsprings 50, 51, 53, 54, 55 whence their points 52 will again spring down to Contact some point on. the periphery of the respective platinum rings 24, 25, 24x, 25X, 26

' as previously described.

minal comprising an outer shell and two inner elements and insulations separating the component parts of said terminal, each of said inner elements and said shell having a contact ring sleeved around an end portion thereof; both of said terminals being rotatably housed in bearings in the base of a telephone instrument, and means mechanically operated whereby contacts to both terminals may be closed for thepurposes specified.

2. In a telephone switch, a terminal adapted to be wired to the telephone receiver, said terminal comprising an outer shell and two inner elements and insulations separating the component parts of said terminal, each inner element having a contact ring sleeved around an end portion of said element; and a second terminal adapted to be vwired to the bell box mechanism, said lterminal comprising an outer shell and two inner elements and 'insulations separating the. component parts of said terminal, keach of said inner elements and said shell having a contact ring sleeved around an end portion thereof; both of said terminals being rotatably housed in bearings in the base of a telephone instrument; and five spring terminals, each being connected to telephone instrument wiring, each of said spring terminals being insulated and attached to portions attached to the base of said telephone,

each of said spring terminals having a contact point adapted to make and break contact with a specified contact ring carried by one of said rotatable terminals when acted upon by means mechanically operated whereby contacts to both terminals may be closed or opened for the purposes as speciied.

3. In a telephone instrument, switch mechanism located in the base thereof, a bell cord wiring and a receiver cord wiring, each of said wiring entering the base cover of said telephone instrument through an individual hole and terminating in a terminal contact member rotatably housed in bearings attached to said telephone instrument, and means mechanically operating whereby contacts to both terminals may be closed for the purposes as specified.

4. In a telephone switch, aterminal adapted to be Wired to the telephone receiver, said terminal comprising an outer shell and two inner elements and insulations separating the component parts of said terminal, each inner element having a contact ring sleeved around an end portion of said element; and a second terminal adapted to be Wired to the bell boX mechanism, said terminal comprising an outer shell and tWo inner elements and insulations separating the component parts of said terminal, each of said inner elements and said shell having a contact ring sleeved around an end portion thereof; both of said terminals being rotatably housed in bearings in the base of a telephone instrument; and iive spring terminals, each being connected to telephone instrument Wiring, each of said spring termi nals being insulated and attached to portions attached to the base of said telephone instrument; and a spring actuated lever hinged to a hanger attached to the base of said instrument and means connecting said lever to the receiver' hook of said instrument, an insulation on the outer end of said lever; each of said spring terminals having a contact point adapted to make contact With a specied contact ring carried by one of said rotatable terminals when the receiver is off the hook, said insulated end portion of said spring actuated lever operating when the receiver is on the hook to break the contact between each set of spring contact points and contact rings in the manner asv specified.

HANS HANSEN. `Witnessesz Y CLARENCE Crnzrs'rorrnnsnn, Jol-IN CHRIs'rorrE-RSEN.

Goples of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.l

erhmmm, B. U. 

